MYOLOGY. 61 



RECTUS CAPITIS ANTICUS MAJOR. 



Origin. Transverse process of third, fourth and fifth cervical 

 vertebras. 



Insertion. Body and basilar process of sphenoid. 

 Action. Flexes head or carries it to one side. 

 Nerve. First cervical. 



RECTUS CAPITIS ANTICUS MINOR. 



Origin. Inferior surface of atlas. 



Insertion, action, nerve. Same as preceding. 



RECTUS CAPITIS LATERALIS. 



Origin. From atlas outside preceding. 

 Insertion. Styloid process of occipital. 

 Action. Depresses head laterally. 

 Nerve. First cervical. 



SCALENUS SUPERIOR. 



Origin. Transverse processes of last three or four cervical 

 vertebrae. 



Insertion. Superior extremity of first rib. 



Action. Flexes neck, inclines it to one side, or raises rib. 



Nerve. Third and fourth cervical. 



SCALENUS INFERIOR. 



Origin. Transverse process of last four cervical vertebrae. 

 Insertion. Anterior border and external face of first rib. 

 Action. As preceding. 

 Nerve. Third and fourth cervical. 



LONGUS COLLI. 



Origin; Posterior Portion. Inferior face of bodies of first six 

 dorsal vertebrae. 



Insertion. Inferior tubercle of sixth cervical vertebrae. 



Origin; Middle Portion. Transverse process of last six cer- 

 vical vertebrae. 



Insertion. Inferior ridge of bodies of first six cervical vertebrae. 



Origin; Anterior Portion. Anterior three or four fasciculi of 

 middle portion. 



